Tod,
I hope you enjoy them as much as I have! They are definitely a great start/addition to one's library. I have been in the habit of reading them this time of year and memorizing one or two plants for the upcoming season. Then I do not have to carry them around with me all the time.
My wife is coming around to this odd hobby of mine too. The 3 different jellies I made (apple butter, grape, & raspberry) were a good argument. Seeing some of 'the things you dig up' for sale at $7.99/lb. or $21/lb. were another good argument. The burdock and ramp soup, with a side of steamed nettles I made last May swung the deal

So now, I am going to collect morels- she loves mushrooms.
Gopher,
I have heard dead elms too, and to look under the drip line of the branches. The south slope of a hill gives it a temperature boost, so you will often see a 'south slope' season, then a 'north slope' season to growing things. That, and moving an hour North or South, can change when things ripen by a week or two. This really helps with short-season foods like fiddleheads.
-BSD